@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000387>
  skos:prefLabel "گاز‌های طبیعی"@fa, "natural gases"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000104>
  skos:prefLabel "هیدروكربن‌ها"@fa, "hydrocarbons"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000231>
  skos:broader <http://www.irandoc.acir/onto/irandoc/CHMTR000206>, <http://www.irandoc.acir/onto/irandoc/CHMTR000387>, <http://www.irandoc.acir/onto/irandoc/CHMTR000236>, <http://www.irandoc.acir/onto/irandoc/CHMTR000028> ;
  skos:prefLabel "methane"@en, "متان"@fa ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000396>, <http://www.irandoc.acir/onto/irandoc/CHMTR000015>, <http://www.irandoc.acir/onto/irandoc/CHMTR000104>, <http://www.irandoc.acir/onto/irandoc/CHMTR000097>, <http://www.irandoc.acir/onto/irandoc/CHMTR000017>, <http://www.irandoc.acir/onto/irandoc/CHMTR000034> ;
  a skos:Concept, <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000236>
  skos:prefLabel "اجزای ناچیز هوا کره"@fa, "atmosphere teeny components"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000034>
  skos:prefLabel "آلاینده‌های هوا"@fa, "air pollutants"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000396>
  skos:prefLabel "موریانه‌ها"@fa, "termites"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000028>
  skos:prefLabel "آلاینده‌های نوع اول"@fa, "primary pollutants"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000017>
  skos:prefLabel "سوختن هیدروكربن‌ها"@fa, "combustion of hydrocarbons"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000015>
  skos:prefLabel "سوختن كامل هیدروكربن‌ها"@fa, "complete combustion of hydrocarbons"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000206>
  skos:prefLabel "زیست‌گاز"@fa, "biogas"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .

<http://www.irandoc.acir/onto/irandoc/CHMTR000097>
  skos:prefLabel "alkanes"@en, "آلكان‌ها"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/CHMTR000231> .